This looks great Frank, and thank you for touching up that exhaust!
I was going to do exactly the same - I got a spare cover just for this. Great to see it done!
So, did you weld the holes all the way to the underside? The top valve chambers are just shaved off, right?
Yeah, those I bought had extreme buildup of greasy carbon. I took me quite some time to remove as much as I could. A VERY dirty job, as I'm sure you know! Then I put them in an ultrasonic bath and then ran very hot water over everything, to dry it with a hair dryer at the end. Then - bead blasting and another hot water rinsing. I think they are well prepared for whenever the welding will come.
I see you also went for the black theme on the head. I love the KZ in black and silver! What are you going to do with the cover? All polished? I did mine also black except for the polished ends.
I see a timing advancer case in the background